Feed-water heater and purifier



(No Model.)

B. BRAZELLE.

FEED WATER. HEATER AND PURIPIER.

` No. 245,776. Patented Aug. 16,1881.

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N. FEYERS. Phuwumognpmr, wnmngmn, r24 C.

UNITED STATES PATENT OEEIcEO BENJAMIN BRAZELLE, OF ST. LOUIS, MISSOURI.

FEED-WATER HEATER AND PURIFIER.

SPECIFICATION forming part of Letters Patent No. 245,776, dated August16, 1881. l

Application filed May 7, 1381. (No model.)

To all whom 'it may concern Be it known that I, BENJAMIN BRAZELLE, ofSt. Louis, in the county of St. Louis and State of Missouri, haveinvented certain new and useful Improvements in Feed-Water Heaters andPurifiers, of which improvements the following is a specification.

The object of my invention is to provide simple and effective means forimparting a high degree of heat to and thoroughly removing saline andother impurities from feed-water prior to supplying it to asteam-generator; to which end my improvements consist in the combinationof a vertical heater-chamber, a water-supply pipe communicatingtherewith at top, a steam-supply pipe opening thereinto below thewater-supply pipe, a partition or diaphragm extending across the chamberbelow the steam-suppl y openin g, and having a depositing-tubeestablishingcommunication between the space above the diaphragm and thelower portion of the heater-chamber, and a deliverypipe connected to thechamber above the lower opening of the depositing-tube.

The improvements claimed are hereinafter more fully set forth.

The accompanying drawing is avertical centra/l/ section through afeed-water heater and purier embodying my improvements, showing theapplication thereof to a steam-generator.

The heatingand purifying chamber A, which is, by preference, ofcylindrical form, is made of cast or wrought metal of sufficientstrength to sustain the pressure of steam carried in the generator F,and may be either mounted vertically upon a proper base or pedestal, A',by which it can be secured to a door or foundation, or hung verticallyupon a wall or post or the side of the generator, as convenienceprescribes. The upper end of the chamber A is closed by a tight cap orcover, A2, to which is connected a water-supply pipe, B, communieatinglwith the feed-pump, the water being delivered to the chamber in aseries of nc jets by a perforated conical sprayer, B', fitted to thechamber or to the cap A2, below the deliveryopening of the water-supplypipe. A steamsupply pipe, C, leading from the steam-space of thegenerator, is connected to the chamber A adjacent to the sprayer B', sothat the entering currents of steam mayimpinge upon and impart heatdirectly to the jets of feed-'water issuing from the sprayer, and adiaphragm or partition, D, extends across the chamber A, below theopening of the steam-pipe O. In the instance shown saturated steam takendirectly from one of the steam-chambers of the generator is employed;but where a higher degree of heat is advisable or desirable thesupplypipe O receives its steam from a superheater of any approvedconstruction, a simple form of which consists ot' a coil of pipe locatedin the smoke-box and having its ends communieating respectively with thesteam-space and with the supply-pipe O. The diaphragm D divides thechamber A into two compartments, the only communication between which isthrough a depositing-tube, D', extending from the diaphragm to a pointwithin the lower compartment below its horizontal center, so that thewater which it delivers from the upper to the lower compartment entersthe latter nearer to its lower than to its upper end. A Water-deliverypipe, E, is connected to the lower compartment of the chamber A at apoint therein above the lower opening of the depositing-tube D', andserves to conduct the heated and purified feed-water to the waterspaceof the steam-generator at any desired point.

The steam-supply pipe O and water-delivery pipe E may be furnished withsuitable stop and check valves,respectively, so that communicationbetween the heater and generator may be closed when desired. A blow-offcock, A3, is fitted to the chamber A adjacent to its lower end, for thepurpose of enabling the chamber to be cleared of the depositedimpurities by blowing off the same from time to time, as required.

In the operation of my improvements the feed-water enters the uppercompartment of the heater-chamber A, through the pipe B and sprayer B,infine jets, which are heated by the direct contact of the live steamentering by the supply-pipe C, and necessarily to a much higher degreethan is practicable where exhaust-steam is employed, as usually, for thepurpose, with acorrespondin g advantagein the separation of thecontained foreign matters. The hea ted feed-water passes down thedepositing-tube D', by which it is conducted to the lower portion ofthechamber, and the separated impurities settle to the bottom,where theyare not subject to any tendency to circulation and consequent liabilityto be drawn with the heated feed-water into the generator, the openingof the delivery-pipe E being above the discharging Aend of the tube D',and the supply through said pipe being drawn from the upper portion ofthe compartment, and at a point above that at which the foreign mattersare deposited.

' My improvements can be applied at compal" atively slight cost ofconstruction and maintenance, and within a limited compass, and will befound of special value where the percentage of earthy and salineconstituents contained in the feed-Water used is so great as to preventtheir thorough separation by the effect of the heat obtainable fromexhaust-steam.

I claim as my invention and desire to secure 2o

